National Dental Examining Board of Canada (NDEB) Practice Exam

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Master your National Dental Examining Board of Canada (NDEB) exams with our comprehensive practice guide. Achieve excellence in your dental certification with expertly crafted questions and detailed explanations.

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The best time to begin interceptive orthodontic treatment for a patient with skeletal class II is...

Right before the adult teeth erupt
Just after the pre-pubertal growth spurt
Several months prior to the pre-pubertal growth spurt
After all permanent teeth have erupted

The correct answer is: Several months prior to the pre-pubertal growth spurt

It is suggested to begin interceptive orthodontic treatment for a patient with skeletal class II several months prior to the pre-pubertal growth spurt because at this time, the skeletal and dental growth is still active and can be influenced by the treatment. Beginning treatment right before the adult teeth erupt (option A) may not allow enough time for proper correction, while starting after the pre-pubertal growth spurt (option B) is less effective. Starting after all permanent teeth have erupted (option D) may also limit the effectiveness of treatment. Therefore, option C is the best time to begin interceptive orthodontic treatment.